| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 15 Dec 2021 | 14 Dec 2021 | 001-38022 | |
| 4 | Open Document | Open Filing | 14 Sep 2021 | 03 Sep 2021 | 001-38022 | |
| 4 | Open Document | Open Filing | 24 Jun 2021 | 19 Jun 2021 | 001-38022 | |
| 4 | Open Document | Open Filing | 04 Jan 2021 | 01 Jan 2021 | 001-38022 | |
| 4 | Open Document | Open Filing | 24 Jun 2020 | 23 Jun 2020 | 001-38022 | |
| 4 | Open Document | Open Filing | 19 Jun 2020 | 17 Jun 2020 | 001-38022 | |
| 4 | Open Document | Open Filing | 03 Jan 2020 | 01 Jan 2020 | 001-38022 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Feb 2019 | 11 Feb 2019 | 001-38022 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Jun 2018 | 21 Jun 2018 | 001-38022 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 May 2018 | 30 Apr 2018 | 001-38022 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Sep 2017 | 11 Sep 2017 | 001-38022 |
| 3 | Open Document | Open Filing | FORM 3 | 01 Mar 2017 | 01 Mar 2017 | 001-38022 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2013 | 09 Jul 2013 | 000-11480 |
| 4 | Open Document | Open Filing | 03 Apr 2012 | 30 Mar 2012 | 000-11480 |